worst trip to maine ever

ok looking for some help. It took me 5 hours to drive what normally would take 1.5hr. My yugo started out fine then it lost all power and would go more then 5

Message 1 of 4
, Nov 3, 2007

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ok looking for some help. It took me 5 hours to drive what normally would take 1.5hr. My yugo started out fine then it lost all power and would go more then 5 mph with the pedal to the floor. I pulled over at a gas station and found that the hose to the brake booster was shot, also seems that the little elbow wasn't sealing too well. I put a new hose on and was on my way then suddenly smoke started pouring out the tail pipe and the car went 5 again. i pulled over and suspected that elbow so took the hose off the carb and plugged the hole with tape cuz that wa all i had. i drove and the car was fine, then it did it again so i stopped at autozone and got vaccum plugs. then it was fine. then it did it again andi noiticed the vacum cap flexed when i reved the engine so i got a small plastic elmers glue cap and wedged it in the whole. it seemed fine then totally dies. like i would start it and it wouldnt run unless the gas was fully to the floor, and then it wouldnt go above 1,000rpm, with wide open throttle. i pulled the plugs which were one day old and they were black. I was only able to clean 2 of them since i had only an adjustab;le wrench with me. i cleaned them and put them in and the car went 5 again for about 2 miles. I stopped at a gas station to get an energy drink figureing on about a 7 hr drive home at 5mph. i get back in and leave and a mile down the street it picks up speed and drove home fine!!!! i woukdnt go above 55 just to be safe but then on the home stretcvh i broought her up to 80 trying to see if it woujld do it again and nothing.......ruined my trip to bar harbor cuz i couldnt make it there
could this all be caused by a vacum leak? it just seems to drastic for me. the plugss litterally were a day old and had not even 100 miles on them and they were NGKs not bad plugs so why all black? any ideas?
matt

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Don Conkling

Matt, Sounds like no fun at all. You didn t mention if the black plugs were dry or wet. In my limited experience, dry black plugs show an overly rich

Message 2 of 4
, Nov 3, 2007

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Matt,

Sounds like no fun at all. You didn't mention if the black plugs were dry or wet. In my limited experience, dry black plugs show an overly rich mixture. I would look at a sticking choke or something that would make it run rich intermittently. If the plugs were wet and oily, that is trouble. Often bad rings or a problem with the bore. I wouldn't expect it to be intermittent.

With my Yugo, a loose vacuum connection gave the symptoms of rough or no idle but I could get up to highway speeds. No black smoke at all. But it is possible that still could be tied to the vacuum system.

I can't see a way that the vacuum booster to the brakes would cause the symptoms that you mention. Just higher brake effort.

You mention new plugs. Although rare, could you have had a bad plug? Did you gap them? How about the plug wires, distributor cap, or
rotor? You probably handled all when you changed the plugs?

My experience is that many of my Yugo problems occur when I cause a problem with my limited mechanical skills.

I hope this is some help.

Anybody got other ideas? Let us know when you find the cause.

Don

Matt Goguen <mattyg84@...> wrote:

ok looking for some help. It took me 5 hours to drive what normally would take 1.5hr. My yugo started out fine then it lost all power and would go more then 5 mph with the pedal to the
floor. I pulled over at a gas station and found that the hose to the brake booster was shot, also seems that the little elbow wasn't sealing too well. I put a new hose on and was on my way then suddenly smoke started pouring out the tail pipe and the car went 5 again. i pulled over and suspected that elbow so took the hose off the carb and plugged the hole with tape cuz that wa all i had. i drove and the car was fine, then it did it again so i stopped at autozone and got vaccum plugs. then it was fine. then it did it again andi noiticed the vacum cap flexed when i reved the engine so i got a small plastic elmers glue cap and wedged it in the whole. it seemed fine then totally dies. like i would start it and it wouldnt run unless the gas was fully to the floor, and then it wouldnt go above 1,000rpm, with wide open throttle. i pulled the plugs which were one day old and they were black. I was only able to clean 2 of them since i had only an
adjustab;le wrench with me. i cleaned them and put them in and the car went 5 again for about 2 miles. I stopped at a gas station to get an energy drink figureing on about a 7 hr drive home at 5mph. i get back in and leave and a mile down the street it picks up speed and drove home fine!!!! i woukdnt go above 55 just to be safe but then on the home stretcvh i broought her up to 80 trying to see if it woujld do it again and nothing..... ..ruined my trip to bar harbor cuz i couldnt make it therecould this all be caused by a vacum leak? it just seems to drastic for me. the plugss litterally were a day old and had not even 100 miles on them and they were NGKs not bad plugs so why all black? any ideas?matt

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dave dutton

Hello Matt, Probably catalytic converter plugged up and coming unplugged by itself intermittently. I check for bad cats using my pyrometer. If the exhaust

Message 3 of 4
, Nov 4, 2007

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Hello Matt,

Probably catalytic converter plugged up and coming unplugged by itself
intermittently. I check for bad cats using my pyrometer. If
the exhaust doesn't come out hotter than it goes in then the cat is
bad.

Alternately (and subjectively) you can listen to the exhaust for a
plugged up sound.

At 12:43 PM 11/3/2007, you wrote:

ok looking for some help. It
took me 5 hours to drive what normally would take 1.5hr. My yugo started
out fine then it lost all power and would go more then 5 mph with the
pedal to the floor. I pulled over at a gas station and found that the
hose to the brake booster was shot, also seems that the little elbow
wasn't sealing too well. I put a new hose on and was on my way then
suddenly smoke started pouring out the tail pipe and the car went 5
again. i pulled over and suspected that elbow so took the hose off the
carb and plugged the hole with tape cuz that wa all i had. i drove
and the car was fine, then it did it again so i stopped at autozone and
got vaccum plugs. then it was fine. then it did it again andi
noiticed the vacum cap flexed when i reved the engine so i got a small
plastic elmers glue cap and wedged it in the whole. it seemed fine then
totally dies. like i would start it and it wouldnt run unless the gas
was fully to the floor, and then it wouldnt go above 1,000rpm, with
wide open throttle. i pulled the plugs which were one day old and
they were black. I was only able to clean 2 of them since i had only an
adjustab;le wrench with me. i cleaned them and put them in and the car
went 5 again for about 2 miles. I stopped at a gas station to get an
energy drink figureing on about a 7 hr drive home at 5mph. i get back in
and leave and a mile down the street it picks up speed and drove home
fine!!!! i woukdnt go above 55 just to be safe but then on the home
stretcvh i broought her up to 80 trying to see if it woujld do it again
and nothing.......ruined my trip to bar harbor cuz i couldnt make it
there
could this all be caused by a vacum leak? it just seems to drastic for
me. the plugss litterally were a day old and had not even 100 miles on
them and they were NGKs not bad plugs so why all black? any ideas?
matt

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scramble challenge with star power.
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Matt, Be there, done that. Sound like one of the 4 jets/air bleeds in the carb is loose. You don t have to take apart the carb, just remove the air cleaner

Message 4 of 4
, Nov 16, 2007

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Matt,

Be there, done that. Sound like one of the 4 jets/air bleeds in the
carb is loose. You don't have to take apart the carb, just remove the
air cleaner housing and then remove the horizontal pin that holds the
air cleaner bracket on the top of the carb in place.

Get a medium-blade screwdriver and a flashlight. If you look down the
carb throat, you'll see 4 screw heads between the two carb barrels.
Use the screwdriver to ensure they're tight (clockwise). Don't loosen
them to test, just tight each one firmly (but not as tight as humanly
possible; you may have to undo them someday).

If the jets are loose, extra gas is dumped into the engine. If the
loose one is on the primary (firewall) side, you see improvement when
you floor the gas pedal. If it's on the secondary side, nothing seems
to help.

If none of the jets/bleeds are loose, and you've never rebuilt the
carb, there's a good chance that the brass fuel inlet cutoff valve is
shot. This is what shuts off the fuel entering the carb bowl when the
float rises when it's full. The bowl overflows with gas, usually at
high engine speeds or going over 60 mph, and floods the engine. A
rebuild kit has a replacement neoprene valve that seals better.

It's also possible that the float is leaky and doesn't float anymore,
but this is very unlikely.

>
>
> ok looking for some help. It took me 5 hours to drive what normally

would take 1.5hr. My yugo started out fine then it lost all power and
would go more then 5 mph with the pedal to the floor. I pulled over
at a gas station and found that the hose to the brake booster was
shot, also seems that the little elbow wasn't sealing too well. I put
a new hose on and was on my way then suddenly smoke started pouring
out the tail pipe and the car went 5 again. i pulled over and
suspected that elbow so took the hose off the carb and plugged the
hole with tape cuz that wa all i had. i drove and the car was fine,
then it did it again so i stopped at autozone and got vaccum plugs.
then it was fine. then it did it again andi noiticed the vacum cap
flexed when i reved the engine so i got a small plastic elmers glue
cap and wedged it in the whole. it seemed fine then totally dies.
like i would start it and it wouldnt run unless the gas was fully to
the floor, and then it wouldnt go above 1,000rpm, with wide open
throttle. i pulled the plugs which were one day old and they were
black. I was only able to clean 2 of them since i had only an
adjustab;le wrench with me. i cleaned them and put them in and the
car went 5 again for about 2 miles. I stopped at a gas station to get
an energy drink figureing on about a 7 hr drive home at 5mph. i get
back in and leave and a mile down the street it picks up speed and
drove home fine!!!! i woukdnt go above 55 just to be safe but then on
the home stretcvh i broought her up to 80 trying to see if it woujld
do it again and nothing.......ruined my trip to bar harbor cuz i
couldnt make it there

> could this all be caused by a vacum leak? it just seems to drastic

for me. the plugss litterally were a day old and had not even 100
miles on them and they were NGKs not bad plugs so why all black? any
ideas?

> matt
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